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Go Back   SailNet Community > On Board > Gear & Maintenance > Electrical Systems
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  #1  
Old 07-04-2012
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Heat shrink connectors

Are heat shrink connections watertight? Need to rewire lights on my trailer and want to make sure i don't have corrosion issues. I launch in saltwater. Thanks

Steve
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heat shrink

The good adhesive lined ones are. Regular shrink tube will let in water and eventually fail.
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Old 07-04-2012
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Re: Heat shrink connectors

It does depends which ones you buy..

Look for the best quality (generally the most expensive) or smear cheaper ones with silicone if you're really concerned, but wrapping each connection with electrical tape good and tight will keep the water out for the length of time you'll have the trailer in the water.
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Was thinking i could put some grease/silicone in before i shrink it to help keep water out? Shouldn't affect the heat shrink process i think. ???
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Old 07-04-2012
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Yes, if installed properly.
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Quote:
Originally Posted by minnow1193:892703
was thinking i could put some grease/silicone in before i shrink it to help keep water out? Shouldn't affect the heat shrink process i think. ???
no.
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Old 07-05-2012
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Re: Heat shrink connectors

If you are using connectors with adhesive heat shrink do not use grease/silicone as it will not allow the adhesive to work properly.
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Old 07-05-2012
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Good call. Thanks
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Re: Heat shrink connectors

Quote:
Originally Posted by minnow1193 View Post
Are heat shrink connections watertight?
If you get the kind that are adhesive-lined, such as these: FTZ Industries or these: Terminal Town's Electrical Connector Crimp and Seal/Crimp and Seal , for example: Yes - if properly applied.

Jim
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heat shrink

I have tried the grease and silicone method with regular heat shrink, they both make a mess and only marginally improve there sealing. If its a job worth doing do it right the first time. West marine has the butt connectors with the adhesive lined shrink.
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